GM# 12498544 head gaskets are these the OEM replacement?
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Doing a head gasket on a ls1 with 241 heads, the original head gaskets were graphite so I wanted to know if the replacement gaskets for the graphite are the GM# 12498544 gasket shown below or is ot better to get the felpro from autozone?
http://image.hotrod.com/f/10722661+r...n_a_ls1%2B.jpg
http://image.hotrod.com/f/10722661+r...n_a_ls1%2B.jpg
Last edited by GLT1; 02-19-2016 at 03:13 PM.
#5
Moderator
iTrader: (4)
Join Date: Jul 2014
Location: My own internal universe
Posts: 10,452
Received 1,852 Likes
on
1,152 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
the early LS1 heads came with a notch. Makes gasket shopping a real pain. The notch will be about 1-3/8" long, 1/4"-3/8" wide, and about 1/8" deep and will be near one of the two middle chambers.
If you have a notched head, you should use the graphite gasket. Fel pro does make a couple of very specific multilayer steel gaskets that work with notched heads.
If you have a notched head, you should use the graphite gasket. Fel pro does make a couple of very specific multilayer steel gaskets that work with notched heads.
#7
TECH Addict
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Here is a pic to show you the difference.http://www.performancetrucks.net/for...-head-diff.jpg
Last edited by gagliano7; 03-09-2016 at 11:29 AM.
Trending Topics
#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Doing a head gasket on a ls1 with 241 heads, the original head gaskets were graphite so I wanted to know if the replacement gaskets for the graphite are the GM# 12498544 gasket shown below or is ot better to get the felpro from autozone?
http://image.hotrod.com/f/10722661+r...n_a_ls1%2B.jpg
http://image.hotrod.com/f/10722661+r...n_a_ls1%2B.jpg
#10
Launching!
iTrader: (7)
Join Date: Mar 2005
Location: Florida
Posts: 235
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
[QUOTE=GLT1;19154922]Doing a head gasket on a ls1 with 241 heads, the original head gaskets were graphite so I wanted to know if the replacement gaskets for the graphite are the GM# 12498544 gasket shown below or is ot better to get the felpro from autozone?
GLT1, yes that is the correct part number (12498544). The motor I built was a 2001 with 241 heads and had graphite gaskets. The GM MLS gasket you mentioned is the replacement and will work. Those are the ones I am currently running in my motor with no problems.
GLT1, yes that is the correct part number (12498544). The motor I built was a 2001 with 241 heads and had graphite gaskets. The GM MLS gasket you mentioned is the replacement and will work. Those are the ones I am currently running in my motor with no problems.